Transfer valve



17, 1943- R. E. J. NORDQUIST 2,326,794

TRANSFER VALVE Filed Dec. 10, 1941 l 7f INVENTOR.

Mz% MM A T To e/v s Patented Aug. 121943 V The i present .mvmtronclosing containers or can and h s particulari erencetoa novelrn t I atransfer valve offa, acuu g i i a In .vacuumclosing roeir -s and manycan making machines; p p p I I bodies with one endattachediandwithgacancn'd orcover, are conveyed throng-n the'machinej'by turrets andtra-nsfer"valves having pockets in which the canparts are located While moving from one place to anotherl The presentinvention contemplates more posie,

tive holding of the can parts in suchiturrets and transfer valves bymeans of a magnetic force so that the can parts will be prevented fromshifting in their pockets While being advanced.

7 An object, therefore. or" the invention is rovision in a turret ortransfer valve of a can closing machine of holding devices which operateto retain a can part in a pocket of the turretor valve by magneticattraction sothat the can part will be maintained in a definitepredetermined position within the pocketgduringiits advance ment throughthe machine.

Another object is the provision of such holding devices which maybeadjustedto a predeter-" mined elevationin the turret or valve pocketsto v maintain thecan part in a' clesired position.

Numerous other objects and advantages or" the invention will be apparentas better under-' stood from the following description, which, taken inconnection with: the accompanying drawing, discloses a preferredembodiment thereof.

Referring to the drawing:

Figure 1 is a plan view partly in horizontal section taken through aportion of "a transfer valve embodying the instant invention, with partsbroken away; and v 1 Fig. 2 is a fragmentary front elevation of thevalve, with partsv broken back and shown in section.

, As a preferred embodiment of the invention the drawing illustratesprincipal parts of a transfer or turret valve for a vacuum closingmachine of the character disclosed in United States Patent 2,039,338;issued May-5, 1936," to Ronald E. J.

. ber i i having al pl urality ofipockets" "around its peripheryconstruction; 7 V v V a I 1 Each valve pocket 12 contains a spacerblockf "The transfer valveincludes-a eyl-i rrdjical me mounted on: a shaitwhich is -'1fota t edin-'- n'v suitable manner in ime with the ather movng parts of the machine. The" valve memberidi -'f r s t rrwed w frame{-5 vv fch ma boa-part i l for m In the instant ma chi-ne tl'ie-valve Handthe valve seat is seal the entrance. to a. vacuum chamber iii inwhich the cover A is. seamed onto .7 a can in the usual manner. ,Thevalve seat is formed with an inletior entrance opening, I 1. and

F a similar outlet or discharge opening is disposed] opposite the inletvopening to'permit of inserting and discharging the can covers A intoand from the valve pockets,

2],- a plur'ality of shims '22, and a cover guide blcck'ZS which areheld together'against the'ceiling ofithe pocket by bolts z l secured tothe valve Y member: H The bottom of thecover guide block i 23 is formedwith a depending ledge-2615c re-"w ceive and to guide into a centralizedposition a coverA inserted in thepocket. The bottom of the cover guideblock isva-ls'o formed With a radial-. I

ly disposed channel Elfin which'there is located an inverted U-shapedpermanent'bar magnet 28. v This magnet isVse'cure-d in place by a .pairof cap" screws 29 and is suitably insulated from the guide bio-ch23.

Thuswhen a cover is inserted into the guide block 23 Withinthevalve-pocket, the cover is attracted to the magnet and is heldagainst di'splacement from the pocket duringrbtation of th valve. fromthose in place in the pocket, the level of;

By augmenting or-subtracting shims-'22 confined cover A may be alteredor adjusted to correspond with other cooperating working parts Nordquistet al. The valve'shown in the drawing is utilized for transferring cancovers or ends A into and out of a vacuum chamber of the'ma .chinealthough the invention is equally well adapted to valves, turrets; orstarwheels in other than vacuum macl'n'nes for advancing cans, can

bodies, and cans with superimposed covers,' or" cans in which the coversare held in spaced relation thereto.

in themachinei If such .an adjustment-cannot v be accomplished: byadjusting the shims, the

spacer block 21 may be removed and a different block ofjthe irequiredthickness inserted in its place. i, v v m Provision is also made forejecting the-cover A i Y from its position within a valve'poc ket l2 atthe;

proper or desired time. For' th'is purpose each pocket l2'contains anejecting finger 3| which" is disposed adjacent theinner end of thepocket. The finger is mounted on afrock shaft 32 which is carried inbearings formedv in the valve member l l.- These rock shafts areoscillated by cam actionas disclosed'in the above mentionedNord;

. v i. :Pwi This-waive -member =is j This led usual transfer valve net28 in the pocket.

quist patent. This is a usual valve ejecting finger construction. When avalve pocketlZ confininga'cover reaches the discharge o-utletinthe valveseat ",the cam actuated ejecting finger 3! within the pocket rocksoutwardly against the cover and pushes it outof the valv pocket againstthe resistanceor'magnetic pull of the holding mag- An opening'35lS'fOrmed in the bottom of the guide block 23 to permit pocket forholding areceived can part against radial displacement relative thereto,andejector means also disposed in a said pocket and operable v to ejectthe can part from said pocket against the holding pull of said magneticelement.

2. In a can closing machine, the combination 7 of a rotatable transfermember having pockets this movement of the ejecting finger. The coverthus removed from its pocket is discharged, through the outlet openingin thevalves'eat 14, into the vacuum chamber for a subsequent'oper-Tation.

It is thought that the invention and many of its attendant advantageswillbe understood from the foregoing description, and it will beapparent L that various changes may be made in theform,

construction and arrangement of the parts without departingfrom thespirit and scope of the invention orsacrificing allot its materialadvantages, the form hereinbefore described 'being merely a preferredembodiment thereof. v I i i f ;1. In a can closing-machine, thecombination of arotatable transfer member havi g peripheral 1 pocketsfor receiving a can part, a permanently energized magnetic elementdisposed in a said transfer member.

for receiving a can part, a guide block within said pockets forconfining a received can part in a predetermined position in its pocket,and a permanently energized magnet secured to said guide block forretaining th confined can part against radial displacement duringrotation of said 3. In a can closing machine, the combination --of a"rotatable transfer member having pockets for receiving a can part, aguide block within said pockets for confining a received can part in apredetermined position in its pocket, removable and. replaceabl spacerelements adjacent .said

" guide blocks in said pocket for locating said guideblocks andthe canparts confined therein I at a predetermined elevation in said pockets,and

a permanently energized magnet secured to said guide block for retainingthe confined can part against radial displacement during rotation ofsaid'transfer member. Y i V g RONALD E, J NORDQUIS'I;'

